Roll-pinning machine.



F. P. HOFFMAN.'

ROLL PINNING MACHINE. APPLICATION rILBn JULY e, 1909.

Patented Apr. 5, 1910.

. 3 SHEETS-SHEET 1.

E'. P. HOFFMAN.

ROLL PINNING MACHINE.

APPLIGATION FILB'D JULY s, 190s,

'954, 1 86, Patented Apr. 5, 1910.

s sums-SHEET a.

F. P. HOFFMAN. ROLL PINNING MACHINE. APPLIOATION FILED JULYe, 1909 Patented Apr. 5, 1910.

8 SHEETBAEBLBT 34 zines ses TMW.

und# before l duce a simple FFICE.'

ROLL-PINNING MACHINE.

escasa Specification lof Letters Patent.

Patented Apr. 5, 1910.

Application tiled July 6, i909. Serial No. 506,004.

To all whom 'it 'may cof/learn:

' lle it known that l, Finzi) li lli'ufiiiuiis, :i citizen ot' the itlnited t-ttates. residing' at lBut'- talo. in the county of Vllrie and State o'tI New York.. have invented a new and useiul linprovement in fl'loll-linniugl h'l'aehines, oi Whieh'ihe following is a specitieation.

This invention relates to a imiehinc `for producing longfitiulinal grooves or indentations in the uppei` sides ot breakfast rolls the same arc baked which operatioi'i is known in the bakers trade as pinning. because it; has heretofore been done by means of a hand operated rolling' piu.

i It is the object of this invention to proand etlieient machine whereby the operation ot pinning thc lumps or balls of dough, which are'subseiiuently baked into rollsinay be etl'eeted expeditiously, uui'- formly and with aniiniininn expenditure of power;

In the accompanying drawings consistingi of 3 sheets: liigure 1 is a side elevation ot' my rollpiuningl machine. Fig. i. is a vertical longitudinal section ot the saine. Fig. 3 is :ir-top plan view thereo't'. Figs. fl and 5 are 'vertical transverse sections in the correspondingly numbered lines iu liig. 3. Fig. 6 is a fragmentary horizontal section taken in line GWG, Fig. 4, looking downwardly. Fig. 7 is a fragmentary horizontal section taken in the saine line but lookingl upwardly. v

Similar letters oit reference indicate corresponding parts throughout the several views.

A represents the main frame ot.' the nia chine which may be ot any suitable construction to support the ditl'erent working;- parts of the machine. Movable lengthwise ofthe frame is acarrier which is adapted to'receive the lumps or balls ol. dough c and present them .successively to the means whereby the longitudinal. grooves or i ndentations are produced in the saine, preparatory to settingr them away and baking them. This carrier preferably comprises an endless belt. or ,apron B which has an upper horizontalxoperative portion and a lower horizontal idle portion and passes with its rcceiving end around a receiving' pulley or roller C mounted on th-e rear end ot the inachine While its tront'or delivery end passes around a delivery roller or wheel Cl mounted on the corresponding end of the frame. This carrier apron may be driven in any suitable manner but preferably by means of a driving' belt which is adapted to pass around one or another t'aee of a cone pulley i] on one end oi the shaft; which carries the delivery pulley ot th i apron. lFor the pui'- pose ot taking` up ythe slack in the apron and keeping the same tight, the shaft of the receiving' roller C is mounted at opposite ends iu bearings c which are slidable in horizontal ways c itoru'ied on the main traine and are moved rearwardly or in the direction for tightening the apron by means of adjusting' screws f arranged in internally screw threaded lugs or ears F on the frame and engaging with the bearings c, as shown in Figs. l and 3. As the operative upper part of the apron moves forwardly, it is slippoi'ted on its underside by the front and rear sections G', G1 ot a table which engages with the underside ot this party ot the apron and prevent downward deflection thereof by reason of the lumps of dough. which are placed thereon by the operator and which are subjected to a down jard pressure by the means which produce the longitudinal `grooves or iudentations therein. The belt or apron held flat and prevented from curling' up at its edges or becoming uneven by means o't a plurality of dstending or retaining' plates or bars ll which are secured transversely at uniform intervals to the outer side of the apron, these plates beingr preferably constructed ot metal and secured to the api'on by means ot" rivets or otherwise.

Although the means whereby the groovine; or indenting of the lumps or balls of dough may be variously constructed, the means for this purpose shown in the drawings are suitable and are constructed :is follows: Above the front section G ot .the apron support/imagr table is arranged a vertically rotatable reel comprising a horizontal shat't i which is journaled transversely in bearings formed in standards y' rising. from opposite sides oli' the frame, two spiders secured to the shat't adjacent to the inner sides of the standards and each provided with a plurality o't radial equidistaiit arms r and a plurality ot pinning rollers or bars Z arranged in an annular concentric row about the axis of the reel and each pivoted at its opposite ends on the outer ends of a pair of corresponding' arms L' of the spiders. This reel rotated in the direction for causing the side facing the top of thc apron to nieve in the saniedirection and in unison therewith. This movement of the reel may be produced in any suitable way but 1sl prefn erably derived from the motion of the apron bythe means shown in the drawings which comprise a plurality of tappets or shifting lingers M arranged on the outer side of the apron adjacent to one edge thereof and each mounted on the iront end of a longitudinal supporting rod m which is' secured at its i,

abreast, because this permits of employing both hands of the operator to advantage.

These lumps or balls are so placed upon the apron that the same upon being moved for- Ward past the reel are engaged successively on their upper sides by the pinning rollers or bars of the reel,L each of these rollers or bars engaging with a pair of dough balls and indenting the same simultaneously. ln

order to enable the operator-,to place the dough balls upon the apron in the proper position to be engaged by the pinning rolls gaging means are provided which preferably consist of a plurality of upright'plates N which are secured transversely and at uniform intervals to the outer side of the apron, so that they project laterally from the apron ,and their rear sides may be en vgaged by the lumps of dough and serve as a gage therefor: the attendant places the lumps of dough on the apron next to the gage face on the rear side of the gage plates and they are carried forward by the apron, these lumps will be presented properly `to the pinning rollers or bars of the reel which approach the apron immediately in rear of each gage plate and in the proper relation thereto to produce the .indentations or grooves in the lumps of dough substantially inthe center thereof.

lnorder to permit of properly indenting or grooving lumps or balls of dough of different sizes, so that the groove or dent is arranged in the center thereof, means are provided for adjusting the gage plates in a direction lengthvvise ofthe'movement of.

the apron, so that the gage face of these plates can be adjusted to suit dillerent sizes of dough balls or lumps. il simple means for ell'ecting this adjustment of the plates consists in arranging the saine upon the rear edgel of a horizontal adjusting plate or l'lange u which is adjustably secured to the upper side of an adjacent distending plate lll by means of bolts nl secured to the distending plate and passing through longitudinal slots n2 in the adjusting tlange or plate, as shown in lfig. Upon loosening the bolts n, the adjusting plates and gage plates may be moved lengthwise of the apron to the desired position and after adjustment the same are held in place by tightening these bolts.

For the purpose of preventing the reel from being thrown out of line with the apron when the pinning rollers or bars `are engagedl by the tappets, means are provided for producing a braking or retarding action upoirthe reel which preferably consists of a brake, drum, or reel t) secured to one end of the reel shaft, a brake band o1 engaging with the outer side of said drum and rigidly secured at one end to a lug 0L oirthe adjacent standard and a screw nut os arranged on a threaded shank o* on the opposite end of said brake band and engaging with a lug or bracket o5 on the adjacent standard, as shown in Figs. l, 3 and l. By tightening or loosening the nut o3 su'llicient'pressure of the band may be exerted on thedrum to permit the reel to be turned by engagement of the tappets with the pinning rollers but preventing the blow of these tappets against these rollers from displacing the reel relatively to the apron.

The depth of the groove or indentation which is produced in the lumps of dough is determined according` to whether the dough is comparatively soft or hard. lllhen the dough is soft, a comparatively shallow indentation or groove is produced in the lumps or balls of dough, whereas if the dough is hard the indentation or grooves in the balls are made deeper so as to allow for the greater resilience of the' dough which tends to restore the same to its normal oondition. To permit of thus .indenting the lumps of dough shallow or deep according to the plasticity of the dough, the pinning lrollers or bars while moving pastA the face ofthe operative .side of the apron are caused to approach more or less closely to said face of the apron. section (l et' the table is madevertically adjustable on the frame toward and from the indenting mechanisnn this adjustment being preferably e'l'l'ected by means of slides a horizontally rotatable beveled gear wheel For this purpose the frontl) arranged on opposite sides of the table L' tl ournaled on a bearinuv on the main frame e i-.s

and provided in its hub with. a screw nut g which receives the lower threaded end of tlvy adjusting screw, and a horizontal shaft lt journaled transversely in bearings on the lower part oit' the `trame and provided with the bevel gear wheel r meshing with the lieve] gear wheel (l and having a hand wheel r1 at one end .for turning the shattand the parts connected therewith. Upon turning:r the hand wheel in one direction the l'ront table section will be raised by the intermodiate mechanism, thereby causing the lumpQ ot' dough to be brought closer to the pinning rollers or bars for producing comparatively deep grooves or indentationsl in they .linups or balls such as are required when the dough is comparatively hard. But when the hand wheel is turned in the opposite direction,

be turned forwardly in opposition to the spring until the gage plate passes beyond the trip arm. The, instant this trip arm el airs the gage plate the spring U quickly returns the tlonr holder or sitter to its rearmost position during,r which movement its stops u. strike the standards and causotthe llour holder or sil'ter to he jarred, so that a quantity ott the. tlour eontained therein is discharged through the openings in the bOttom thereot' and upon that; portion ol the, apron below the same. '.lhe mechanism l'or operating this tlour sifting dcviec is so timed thaty the tlour is delivered immediately in the tr-ont, table section is lowered so that the rear of each gage plate upon the apron the lumps or balls et' dough are presented t where the lumps or dough are deposited by to the Ypinning ,rollers at a greater distance l the halter for presentation to the mechtheretroim theretry causingI indentations or;l anism which produces the indentations or grooves oil l t in depth to be produretfl ,in the i grooves thereon. same suitable t'or comparatively sot't dough. After the linups ortg dough have been operrl'he rear section (il ol the table is rigid l ated upon by the grooving or `indenting and pernntnently secured to the adjacent l mechanism, they are discharged upon a repart ol the :nain frame. llr'hile the apron i relying table iV- which is preferably aria trareliiug over this part ot' the table the l ranged in a forwardly inclined position on lumps or halls oit', dough are plaeed trans-4 l the main vframe in -front ol the delivery versely in. pairs on the apron by thel halter. y roller and below the same and has an uplel'ore those parts uit the apron which arer wai'dly projecting' rim or flange 'ir at its adapted to receive the dough halls or lumps lower or t'rout edge. rl`he lumps of dough reach the place where the, halter deposits are not rlisehareed lrom the apron until the the same on the apron, these plaees or parts latter passes below the center of the delivery ot' the apron are dusted or spread with flour, roller and crnnnienres its rearward or idle :so as to prevent the, dough 'troni adhering y n'iovexnenlt. inasunich as these lumps or balls thereto asis eommonly done in halting'. 'lhe y are held 1n place. on the belt up to this time means for this purpory are arranged in re; r t hy means ot the gage plates projerlingl thereot' the platte where the halter deposits thel troni. But, as the gage plates pass below dough ballsI on the apron nd are preferably the center ol" the delivery roller or wheel construct al as follows: represents a llour the lumpsl ot dough are no longer supported holder, sitter or reeeptaele whirh is prel'eig and are taused to l'all from the saine and ably constructed in the torni ol' a trough l the apron with the upper side do'wn on the which arranlejed horizontally above the receiving table. lt is in this position that rrecivingj parlolA the apron and hasI an open the pinned or grooyed lumps or balls ol. top to permit ot .tillirg the same willi llour l dough are, sot away .in pans or otherwise to while its bottom is provided with a trans l pernntI the second raising or proving to take row oi peril'oratious a through which pltre before the halting ope 'ation and it. is the tlour is sifted or (,liscllarned at intervals i tliei.'e'l`oi 'e unnecessary for the baker when iu small quantities upon the apron below l removing( the rolls :trom the table to first the same. This l'lonr holder is pivoted at its li reverse them before setting them away, opposite endsl on standards or npr its t' ris l thereby expedlting the, operation aee0rdiup; from the ymain trame so that the flour f lllgl'ly. .holder or sitter is turned in a vertical. plane l lt will be noted that. this roll pinning,Y inalengthwi i nl the apron. 'lhe rearward rhino is Very simple in ermstruetion, reliable movement ont the llour holder or sitter is g in operation7 not .liable to ret out; of order, limited by means ot' stops 'u secured thereto has u largo eapaeity, requires but; little room and adapted teenggage with the 't'rout side l for its installation and needs but, a small of the adjacent andai-ds. l'hese stops are amount o'tE power tor its operation. yieldin' held in engagement, with said l l claim as my invention: stnndaii a hy means ol a spring; lil eoniufeti l, il. roll pinning; machine (,'omlirising ining one of .s id stops with the adjacent', dentianF .means tor producing indentations s""'ularffl. troiuxside the tlour holejlery in balla of dough and having;- a .rotatable or si. prorated with a dcpendiin; trip support and a plurality ol2 rollers or barsI arm r i., i normally projects dmvnwardly which are nmunted on said support. and .into the path nl the gat-e plates on ll ,i apron. f which are aduptral ylo be moved succesl'arh parte plate duringl its l'orward moin sii/ely into operative positionJ and means ment with the :inruil eiugages with 'thtI trip tor prt-sentira; balls ot dough successively arm, aid ea the tlour bolder or sitter to i to said rollers or liars;

` malaise 2. A roll pinning machine comprising a rotatable reel provided with a plurality of indenting rolls or balls arranged in-an annular row and adapted t0 produce indentations in balls of dough, an endless apron adapted to receive said balls of dough and present thersame successively to said rollers or bars, and means for actuating said reel by the movement of said apron.

3. A roll pinning machine comprising a rotatable reel provided vWith a plurality of indenting rolls or balls arranged in an annular row and adapted to produce indentations in balls ot dough, an endless apron adapted to receive said balls of dough and present the same successively to said rollers or bars, and means for actuating said reel by the movement of said apron comprising tappcts arranged on the apron and adapted to engage successively with said rollers or bars.

4. A roll pinning machine comprisingT a rotatable reel having a plurality of indenting-rollers or bars arranged in an annular row, a carrier for presenting` balls ot dough successively to saidindenting rollers or bars7 -tarding vthe movement of saidE reel comprising a drum rotating with said reel, and a brake band engaging-With said drum and connected With a stationary part ofV the machine. l

6. A roll pinning machine comprising means for indenting rolls of dough, an ende less apron whereby said balls are presented successively to said indenting means, and a vertically adjustable platen which supports said apron below said indenting means,

7. A roll pinning machine comprising .means for indenting rolls of dough7 an endless apron whereby said balls are presented successively to said indenting means, a vertically adjnstable platen Which supports said apron below said indentirg means, and means :for adjusting said 'platen comprising an upright screw connected at its upper end with said platen. a bevel gear Wheel having a screwv nut which receives said screw, and a horizontal shaft provided with a bevel gear Wheel meshing with the tirst mentioned bevel Wheel and a hand Wheel.

8. Av roll pinning machine comprising in- 'cessively to said indenting means, and means for dusting flour on said apron in advance'l of receiving said balls of dough comprising a vertically swinging flour holder arrangedabove the receiving part of the apron and having discharge perforations in its bottom, a stop which limits the backward movement of the Hour holderj a spring which retains said holder yieldingly in its rearmost position, an arm depending from said holder, and a plurality of plates arranged on the apron and adapted to engage successively with said arm and more the holder forivardly.-

FRED P. HOFFMAN. l/Vitnesses Trino. L Por?, ANNA lmois.

Witness my hand this 3rd day 0f Jlilyi 

